Headset for a 2011 Salsa ala Carte

Hi there. Been looking for a new frame for a few weeks now and have just purchased a brand new 2011 Sasla ala Carte 20" frame which will be arriving this week!

Could someone kindly point me to the correct non-tapered headset for this frame? Am looking at going the Cane Creek 40 series route but not 100% sure which is the correct one and there is no specific info out there I am able to track down.